Quartz (Citrine variety)
Silicon Dioxide (SiO2)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
Amazonite
Microcline (KAlSi3O8) with Pb impurities
Citrine
Silicon dioxide (SiO2)
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Amethyst
Quartz (Silicon Dioxide with Iron impurities), SiO2
Amazonite
KAlSi3O8 (Potassium aluminum silicate - blue-green variety of Microcline)
Fire Opal (in Matrix)
Hydrated Silica (SiO2·nH2O)
Jasper
Silicon dioxide (Microcrystalline Quartz, SiO2)
Sunstone
Oligoclase (Plagioclase Feldspar), (Ca,Na)(Al,Si)4O8
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Smoky Quartz with Feldspar
SiO2 (Quartz) with KAlSi3O8 (Potassium Feldspar)
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
Tiger's Eye
Fibrous Quartz (SiO2) with iron inclusions
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Jasper with Quartz Vein
Silicon Dioxide (SiO2)
Carnelian / Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Taaffeite
BeMgAl4O8 (Beryllium Magnesium Aluminum Oxide)
Banded Agate (Crazy Lace / Botswana Agate Beads)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Lapis Lazuli
Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)
Larimar
Blue Pectolite (NaCa2Si3O8(OH))
Citrine Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
Gold in Quartz
Hydrothermal Quartz with Native Gold (SiO2 with Au)
Milky Quartz
Silicon Dioxide (SiO2)
Chrysocolla
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4 nH2O
Turquoise in Matrix
Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Green Aventurine and Clear Quartz Bracelet
Quartz variety with Fuchsite inclusions (Aventurine) and pure Silicon Dioxide (SiO2)
Silver (Native Silver Mineral)
Ag (Native Silver), Alloyed 90% Ag / 10% Cu
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Dyed Agate
Silicon Dioxide (SiO2) with artificial colorants
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
Chalcedony (Common Opal or Agate)
Silicon Dioxide (SiO2)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Zebra Jasper
Tektite variety of Silicon Dioxide (SiO2) with inclusions
Malachite
Malachite (Copper Carbonate Hydroxide, Cu2CO3(OH)2)